Granted Patent
Utility
US 5,968,214 · App. 08/967,059
Air cleaning apparatus for vehicles
Inventors:
Yoshihiro Nagata, Shigetomo Noda, Shinichi Hara, Toshio Harada, Tadakazu Ono, Tsutomu Kimura, Teruaki Yamaguchi, Toshinori Sugiki
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Nov 10, 1997
Inventors
Yoshihiro Nagata
Shigetomo Noda
Shinichi Hara
Toshio Harada
Tadakazu Ono
Tsutomu Kimura
Teruaki Yamaguchi
Toshinori Sugiki
Assignees (at issue)
KOMATSU LTD.
Zexel GmbH
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.